Answer:
Hydrogen = element
Carbon dioxide = compound
Water = compound
Zinc = element
Nitrogen = element
Salt = compound
Helium = element
Carbon monoxide = compound
Explanation:
An element and a compound are different when it comes to the types of atoms they possess. An element has only<u><em> one type of atom</em></u> while a compound has <u><em>two types of atoms.</em></u> For example, Hydrogen is an element because it has two atoms of the same type and that is, the "Hydrogen atom."
On the contrary, Carbon dioxide has<u><em> one carbon atom</em></u> and<u><em> two atoms for Oxygen.</em></u> Therefore, it is a compound because it has two types of atoms: <u><em>Carbon atom</em></u> and <em><u>Oxygen atom.</u></em>
Water has<u><em> two atoms of Hydrogen </em></u>and<u><em> one atom of Oxygen</em></u>. Therefore, it is a compound because it has two types of atoms: <u><em>Hydrogen atom</em></u> and <u><em>Oxygen atom</em></u>.
Answer:
It causes light to slow down significantly
Explanation:
The index of refraction of a substance describes the speed of light in that substance, as a ratio of the speed of light in vacuum to its speed in that substance.
just search it up and there is your answer
A.) All cells come from pre-existing cells. ~ rats don’t just appear in your house
Answer:
According to the numbers 1-5;Aluminium,Mercury,Oxygen,Stainless Steel,Hydrogen gas.
Explanation:
Entropy change is the randomness of the thermodynamic system. The change in the entropy when the water is condensed is 1573 J/K.
<h3>What is the entropy change?</h3>
An entropy change is a product of mass and the ratio of the enthalpy of vaporization to the temperature.
Given,
Enthalpy of vapourization = 2257 J/gK
The temperature in kelvin = 373 k
The change in entropy is calculated as:
Therefore, the change in entropy is 1574 J/K.
Learn more about entropy here:
brainly.com/question/14798359
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